[CentOS] CentOS 7, NFS 4, and a non ext4 fs (like zfs)

John R Pierce pierce at hogranch.com
Mon May 4 08:22:43 UTC 2015


On 5/4/2015 1:09 AM, tballin wrote:
> Hello,
>
> we want to migrate to CentOS 7(.1) , Server, Client etc ...
>
> Right now we need to suspend that because we have some serious issues 
> with NFS4 shared ZFS ( kernel module - zfs on linux project ) Volumes 
> and CentOS 7 clients.
>
> Our current server are CentOS6.5, if we share a zfs volume and do the 
> following on this share: client A reads/access file "z.txt". Now 
> client B replaces (copy, move, unlink+link ) files "z.txt" with a new 
> different version and now client A reads/access the file "z.txt" ( and 
> only the file - do not do anything which does a "stat" on the file 
> e.g. "cat z.txt") the old version/content is read. As long as you do 
> something that issues a "stat" for the file/dir.

I've used ZFS file systems on a NFS Server extensively on Solaris, and a 
fair bit with FreeBSD 9.x, 10.1, and its never had any such issues.   
AFAIK, ZFS on Linux is still considered experimental.


-- 
john r pierce, recycling bits in santa cruz




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